Does the IL600 Series require drilling for installation?

For installation into an already existing hardscape, some drilling may be required to route the wire through the wall. Drilling with a 1/4″ masonry bit may make it easier to direct the wire to the backside of the wall. The 18/2 fixture wire will have to be located to make the final connection to the low voltage cable from the transformer. Yes, some digging may also be required.

Why is the Integral Lighting IL600 a half round shape?
How does the integrated cleat work?